The US is considering putting North Korea back on its terrorism sponsors list, President Barack Obama says, after a cyber-attack on Sony Pictures.
The chief executive of Renault Nissan says manufacturers in Russia are facing a "bloodbath" because of the plunge in the value of the rouble.
Black truffles make an active ingredient similar to that in cannabis
Part vintage, part contemporary, this is 2014’s most fascinating bike
What makes hair grow where - and when - it does? And what does science say about the pros and cons of removal? Greg Foot explains.
Each Christmas, families gather around evergreens to celebrate the season. But many may not realise just how incredible these trees can be. BBC Earth reveal some of the secrets of their tough, tenacious lives.
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